Spiral rigid conveyors, also generically called mechanical conveyors are different from flexible screw conveyors because the rigid conveyor tube is made of carbon steel or stainless steel (304 or 316) instead of nylon.
The rotary spiral, like the structural work for loading and unloading the materials, is made of carbon steel or stainless steel (304 or 316) depending on the type of rigid tube being used.
Though the tube is rigid, the spiral is like the flexible type that facilitates adaptation to the granule size of the material being conveyed while faithfully following the tube geometry in cases where there are pressed curves.
Its other constructive characteristics are the same as the flexible screws (see technical data for the relative product).
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